Zingbot is the peak of Big Brother each summer, and while we don't know whether the rude robot will make an appearance on the first U.S. edition of Celebrity Big Brother, we're as optimistic as the stars are nervous!

"Oh gosh! I l can only imagine. I love Zingbot, but he scares me too," Shannon Elizabeth tells TV Guide. "I don't know what he's going to say."

Broadway star Marissa Jaret Winokur, on the other hand, knows exactly what she expects Zingbot to zing her on. "Zingbot's going to get me for having fake hair, being too loud, talking way too fast," Winokur jokes. "I'm hoping that Zingbot isn't like, 'Oh my god, you're crying all the time,'" she adds. "My biggest fear about going into the house is that at any moment I might burst out and cry and be like, 'Oh my god, I have to go to the Diary Room and then just be in the Diary Room crying'... So I'm really hoping I'm not the contestant that cries all the time."

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"The Zingbot's going straight for the hair. I've seen Zingbot get real physical. Zingbot is hardcore," Mark McGrath says before noting how Zingbot roasted Big Brother 19 houseguest Raven particularly harshly. "I was far away from the action and I was like, that is cutting. And she never recovered from that. She never recovered from Zingbot. Just when you think you're safe, here comes Zingbot."

But at the end of the day, you shouldn't enter Big Brother unless you're prepared to face the zings of Zingbot, no matter how cruel they might be — something Brandi Glanville's experience on Real Housewives more than prepared her for.

"Listen, I take the piss out of a lot of people. If you can dish it out, you have to be able to take it back," explains Glanville. "I'm sure I'll get some wear a bra situation, don't be so crude or too much Botox or whatever it is. I'm sure I'll get zinged for something. Ugly feet, ugly hands, it happens."

Celebrity Big Brother premieres Wednesday at 8/7c on CBS. You can also catch new episodes on Thursday, Friday and Sunday at 8/7c, and don't forget to check out the live feeds on CBS All Access!

Additional reporting by Megan Vick

(Full disclosure: TV Guide is owned by CBS.)